90A Baby Grand Early

Philco, Philadelphia Stg. Batt. Co.; USA

Daten
Forum
Bilder
Sammlungen

  • Jahr
  • 1931
perfect model
  • Kategorie
  • Rundfunkempfänger (Radio - oder Tuner nach WW2)
  • Radiomuseum.org ID
  • 51216

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 Technische Daten

  • Anzahl Röhren
  • 9
  • Hauptprinzip
  • Super mit HF-Vorstufe; ZF/IF 175 kHz
  • Anzahl Kreise
  • 7 Kreis(e) AM
  • Wellenbereiche
  • Mittelwelle, keine anderen.
  • Betriebsart / Volt
  • Wechselstromspeisung / 25 to 60 cycles, 115 Volt
  • Lautsprecher
  • Dynamischer LS, mit Erregerspule (elektrodynamisch)
  • Material
  • Gerät mit Holzgehäuse
  • von Radiomuseum.org
  • Modell: 90A Baby Grand [Early] - Philco, Philadelphia Stg. Batt
  • Form
  • Tischgerät, Kathedralenform (Hochformat, bogig bis spitzbogig, nicht nur runde Ecken).
  • Abmessungen (BHT)
  • 0 x 18 x 0 inch / 0 x 457 x 0 mm
  • Bemerkung

  • Models 90 and 90A were available in a cathedral, a lowboy, and a highboy cabinet. The chassis was made in three versions - an early model 90 and 90A with two 45 output tubes in push-pull, a middle version with one 47 output tube, and a late version with two 47 output tubes. Model 90 is for 115 VAC 50-60 Hz; model 90A is for 115 VAC 25-60 Hz.

    The models 90 and 90A "early" and "middle" have a 4-gang tuning condenser plus 3 tuned IF circuit - both with IF 175 (Rider's change note 8-3). The version "middle", which are above serial number 237,001, of the model 90 and 90A has tubes: 24 RF, 27 osc, 24 1st det., 24 IF, 27 2nd det. rect., 27 det. amp., 27 1st AF amp, 47 output and 80 rectifier. The "late" model 90 and 90A again have push-pull output but with 2 x 47 tubes. See Rider's Philco 3-35 for IF 260 kHz. Applied on models serial B-32001 to B-35000 and above B-53100. They have a 3-gang tuning condenser and only 6 tuned circuits. The same differences can be found for all cabinets, both 90 and 90A: Baby Grand (Cathedral), Lowboy and Highboy (with a stretcher).

    The cathedral cabinet is the classic design by Edward L. Coombs, and is similar to the cathedral versions of model 21, 35, 46, and 70.
     

  • Originalpreis
  • 69.50 $
  • Datenherkunft extern
  • Ernst Erb
  • Schaltungsnachweis
  • Rider's Perpetual, Volume 2 = 1932 (Models 1931/1932)
  • Literatur/Schema (1)
  • Philco Radio 1928-1942 (Philco 1928-36 Wiring Diagrams, Parts Lists, and Essential Service Data)
  • Literatur/Schema (3)
  • Philco Folder 2674.

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